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AB46917

Anti-CD28 antibody [B-T3] - BSA and Azide free

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(1 Publication)

Mouse Monoclonal CD28 antibody. Carrier free. Suitable for Flow Cyt and reacts with Human samples. Cited in 1 publication. Immunogen corresponding to Cell preparation containing CD28 protein.

View Alternative Names

CD28, T-cell-specific surface glycoprotein CD28, TP44

1 Images
Flow Cytometry - Anti-CD28 antibody [B-T3] - BSA and Azide free (AB46917)
  • Flow Cyt

Unknown

Flow Cytometry - Anti-CD28 antibody [B-T3] - BSA and Azide free (AB46917)

Flow cytometry analysis staining CD28 in human lymphocytes using ab46917.

Key facts

Host species

Mouse

Clonality

Monoclonal

Clone number

B-T3

Isotype

IgG2a

Light chain type

kappa

Carrier free

Yes

Reacts with

Human

Applications

Flow Cyt

applications

Immunogen

Cell preparation containing CD28 protein. The exact immunogen used to generate this antibody is proprietary information.

P10747

Specificity

Recognises the B7/BB1 receptor (B7/BB1 R), a 44 kDa protein.

Inhibits mixed lymphocyte culture. Co-stimulates T-cell proliferation.

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Reactivity data

{ "title": "Reactivity Data", "filters": { "stats": ["", "Species", "Dilution Info", "Notes"], "tabs": { "all-applications": {"fullname" : "All Applications", "shortname": "All Applications"}, "FlowCyt" : {"fullname" : "Flow Cytometry", "shortname":"Flow Cyt"} }, "product-promise": { "all": "all", "testedAndGuaranteed": "tested", "guaranteed": "expected", "predicted": "predicted", "notRecommended": "not-recommended" } }, "values": { "Human": { "FlowCyt-species-checked": "testedAndGuaranteed", "FlowCyt-species-dilution-info": "", "FlowCyt-species-notes": "<p><a href='/en-us/products/primary-antibodies/mouse-igg2c-kappa-monoclonal-18c8bc7ad10-isotype-control-ab170191'>ab170191</a> - Mouse monoclonal IgG2a, is suitable for use as an isotype control with this antibody.</p>" } } }
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Properties and storage information

Form
Liquid
Purification technique
Ion exchange chromatography
Purification notes
Sterile-filtered through 0.22 µm and treated to remove endotoxins. Carrier and preservative free.
Storage buffer
pH: 7.3 - 7.5 Constituents: PBS
Shipped at conditions
Blue Ice
Appropriate short-term storage duration
1-2 weeks
Appropriate short-term storage conditions
+4°C
Appropriate long-term storage conditions
+4°C|-20°C
Aliquoting information
Upon delivery aliquot
Storage information
Avoid freeze / thaw cycle
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Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

CD28 also known as T-cell-specific surface glycoprotein CD28 or TP44 plays an important role as a co-stimulatory receptor on T cells. This glycoprotein has a molecular mass of about 44 kDa and is located mainly on the cell surface of T cells. CD28 expression also occurs on thymocytes and some B cells. It forms part of the immunoglobulin superfamily featuring in significant antibody interactions. Researchers often use anti-CD28 antibodies for various immunological assays including CD28 ELISA to study its function.
Biological function summary

CD28 co-stimulates T cells after antigen presentation. It enhances T cell proliferation survival and cytokine production. CD28 functions alongside the T cell receptor (TCR) complex mediating signals that promote full T cell activation. This interaction amplifies the immune response forming an important axis of immune system communication. CD28 interacts with its ligands B7-1 (CD80) and B7-2 (CD86) found on antigen-presenting cells (APCs) illustrating its role in immune system dynamics.

Pathways

CD28 is integral to the PI3K/Akt and MAPK/ERK signaling pathways. These pathways conduct signals critical for cellular growth and survival linking CD28 to downstream transcription factors. The interaction with another protein CTLA-4 acts as a regulatory balance for CD28 signaling preventing over-activation of T cells. This balance influences immune homeostasis and tolerance providing a framework for understanding costimulatory and inhibitory signaling.

CD28's role becomes evident in autoimmune diseases and transplant rejection. Abnormal CD28 signaling links to rheumatoid arthritis where inappropriate T cell activation occurs. Similarly CD28 activity contributes to organ transplant rejection by stimulating T cell-mediated responses against transplanted tissues. CTLA-4 through regulatory feedback can modify these effects providing therapeutic target strategies for managing such disorders. Efforts to modulate CD28 activity involve developing therapeutic agents such as anti-CD28 monoclonal antibodies.
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Product protocols

For this product, it's our understanding that no specific protocols are required. You can visit:
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Target data

Receptor that plays a role in T-cell activation, proliferation, survival and the maintenance of immune homeostasis (PubMed : 1650475, PubMed : 7568038). Functions not only as an amplifier of TCR signals but delivers unique signals that control intracellular biochemical events that alter the gene expression program of T-cells (PubMed : 24665965). Stimulation upon engagement of its cognate ligands CD80 or CD86 increases proliferation and expression of various cytokines in particular IL2 production in both CD4(+) and CD8(+) T-cell subsets (PubMed : 12196291, PubMed : 1650475, PubMed : 35397202). Mechanistically, ligation induces recruitment of protein kinase C-theta/PRKCQ and GRB2 leading to NF-kappa-B activation via both PI3K/Akt-dependent and -independent pathways (PubMed : 21964608, PubMed : 24665965, PubMed : 7568038). In conjunction with TCR/CD3 ligation and CD40L costimulation, enhances the production of IL4 and IL10 in T-cells (PubMed : 8617933).. Isoform 3. Enhances CD40L-mediated activation of NF-kappa-B and kinases MAPK8 and PAK2 in T-cells (PubMed : 15067037).
See full target information CD28
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Publications (1)

Recent publications for all applications. Explore the full list and refine your search

Cancer 62:2118-24 PubMed3263181

1988

T-cell receptor antibodies in the immunohistochemical studies of normal and malignant lymphoid cells.

Applications

Unspecified application

Species

Unspecified reactive species

W C Chan,M J Borowitz,A Hammami,Y J Wu,S J Ip
View all publications
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